Field Strength Estimator

The Field Strength Estimator Chrome extension allows users to quickly calculate power flux density, electric field strength, and magnetic field strength based on transmitted power, frequency, and antenna gain parameters. It also estimates input power to a 50 Ohm receiver using receiving antenna gain. The tool automatically converts between units and provides results accurate to three decimal places for ease of interpretation.

Designed as an estimator, it assumes ideal theoretical conditions and does not account for real-world impairments like reflections, polarization changes, or cable losses. With user-friendly features including unit conversion and warnings when distance parameters leave the far-field condition, this extension helps engineers and enthusiasts evaluate electromagnetic field parameters efficiently directly in their browser.